Hoisting-machine.



PATENTED JAN. 15, l1907.-

G. L. 111111130. HOISTING MACHINE.

APPLICATION FILED MAY 24, 1906..

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I vPATIN'ED JAN. 15, 190'7.v

G. L. TREDO.

HOISTING MACHINE.

APPLICATION FILED MAY 24, 1906.

2 SHEETS-SHEET 2.

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UNITED vSTATES PArnNT OFFICE..

GEORGE L. TREDO, OF BUFFALO, NEW YORK, ASSIG-NOR TO THE CON- TRACTORSPLANT MANUFACTURING COMPANY, OF BUFFALO, NEW

YORK.

HolsTlNe-MACHIVNE.

Patented Jan. 1,5, 1907.

Application iiled May 24, 1906. Serial No 318,443.

with devices for rotating or swinging the derrick horizontally, raisingand lowering the boom, and raising and lowering the grapple or tacklehook which carries the load.

So far as I know, heretofore swinging of the derrick has been effectedby means of a turning cable or line passing with its intermediate orcentral part around the turning or bull wheel securedto the mast andwith its opposite ends around derrick-swinging drums, either of whichcould be connected with a driving-shaft, while the other was free onsaid shaft. As the tight swing-drum rotated with the driving-shaft thecorresponding end of the swinging or turning cable was wound upon thesame, while the opposite end of this cable was unwound from the other orloose swinging or turning drum. N o means were provided for controllingthe movement of the loose swinging drum, and as a result the same wasliable to pay out the cable faster than the same was taken up by itscompanion tight drum, which produced a slack in the trailing end of theswing-cable, which necessitated the employment of take-up rollers andother'devices for keeping the cable taut. This was objectionable notonly on the account of the undue wear upon the swing-cable owing to theemployment of the take-up devices, but also on account of the loss ofcontrol of the derrick on the slack side of the cable, inasmuch as thereywere no reliable means for preventing the boom from swinging in thedirection which it was being pulled by the tight swing-drum beyond whereit was y swinging drums, and a main drumH, mountwanted.

The object of this invention is to provide simple, efficient, anddurable means for maintaining an operative connection between the twoswinging drums, whereby the same are always retained in a definiterelation to each other and the same are compelled to rotate in oppositedirections at the same rate, whereb)T one end of the swing-cable iswound up on one ofthe swinging drums, while the other end of theswing-cable is paid out in the same measure, thereby preventing undueslack in the same and avoiding the necessity of employing specialtake-up devices and also main,

taining full control of the derrick during all parts of its swingingmovement. v

In the accompanying drawings, consisting,

of two sheets, Figure l is a fragmentary very chine having its swingingd rums equipped with my improvements. Fig. 2 is a top plan vview of thesame. Fig. 3 is a vertical trans- -verse section in line 3 3, Fig. 1.=ragmentary perspective view of the derrick F1g..4 is a andhoisting-machine,` showing the application of my invention.

Similar letters of reference indicate the corresponding parts throughoutthe several views. y

The derrick which is operated by my improved hoisting-machine may be ofany usual and well-known construction, that shown ,in

the drawings consisting of an upright masty f A, which is capable ofhorizontal rotation or turning by means of a swing line or cable B,

B', passing with its central or intermediate part around a turning orbull wheel a at the lower end Iof the mast, a laterally-projecting boomC, pivoted at its inner end to the lower part ofthe mast and adapted tobe raised 'and lowered by means of a boom line or cable c, operativelyconnected with the outer end of the boom, and a tackle-hook or grapple Dfor attachment to the. load depending from the outer end of the boom andoperatively connected with the mainline or cable d.

The main parts of the hoisting-machine (shown in the drawings forillustrating the application of my invention) consist of two derrickswinging or turning drums E E', mounted side by side on a driving-shafte, which is journaled transversely at the front end of the main frame F,a boom-drum G, mounted on the main frame in rear of the ed on the Jframein rear of the boom-drum. The opposite ends of the swinging cablearewound ,on the two swingingy drums, respectively, both of these cablesbeing wound around these drums in the same direction. The hauling end ofthe boom-cable is wound around the boom-drum, and the corresponding endofthe main cable, which operates the ltical longitudinal section of ahoisting-ma- IOO tackle-hook, is wound around" the main drum.

Between the twoy swinging drums a drivcouplings, each of whichconsistsoi a coupling rim-or flange y, of wood, secured to one side of thevdriving-wheel and havingv its V-'shaped or tapering-'Outer edge'engaging with` acorr'espondingly-shap'ed annular groove y, in the innjer'side of awheel K ontlje adjacent inner' en'd of oneY of thev lswingingdrums. Upon nio'ving' either of the"L swinging` drums axially on thedriving-shaft Itoward the drivingwheel its wheel K will grip thecoupling,- flangefoi the'driving-wheel and cause' trie respectiveswinging dr'u'm to rotate with the driving-shaft. Upon moving theswinging aiially away from the driving-wheel sufii'ciently'to losen thegripl ofl the couplingii'aii'g'e' on the wheel of the respective drumtlhielatter will be unco'upled from the driving- S a t.-

The means shown in the drawings for moving the swinging drums axiallyinward and' coupling the saineA with the drivingshaft consists of tworotary shifting collarsor sleeves L'L, mounted loosely on thedrivingshaft and each bearing with its plain inner endagainst'tl".eouter end of one of the'swinging drums, while its Outer endis provided with 'a 'cam or inclined face l, which engages lwith acorresponding cam or inclined tace fm, seciir'edt the adjacentstationary part of the main frame; AUpon rotating the shifting sleeveforwardly the operation of its cam against` the companion cam on themain traine 'c'auses the `adjacent swinging drum to be moved toward thedriving-wheel for coupling the same therewith, while upon moving said'shifting sleeve backwardly the respective swin ing drum is permitted to'free itself from the rivi'ng-wheel. These shifting sleeves are operatedby means oia horizontal rockshait N, journaled transversely on the mainrame'b'elw the swinging drums, va iorwa'rdlyp'rj ecting' rock-arm oron'the rock-shaft, Iconf nect'ed "by alink 1p with arearwardly-projecting' army onto'neof the shifting sleeves, and a"rearwardly-projecting rock arm o on the y'r'ockj-jshaft,connected by alink p with a rea-r- 1r wardly-projectingarm'q on the other shift-ing fsle'e'fe.4 These parts are `so constructed that 'when lthe'rock-shait Nis in itsjcentral vposition erative position and either foi the swingingmais wint@ qoupiea with @admiring-wheel,

but upon turning 'the 'rock-shaft toward ione "side of its'central'position one 'of the shifting 'sleeve'swill 'be 'turned forwardlyk or-in the direction which `causes its companion "swinging drum to be movedintov operativ-e engagement with the driving-wheel, while upon movingthe rock-shaft toward the other side foi' its center the swinging drumwhich has just been coupled will now be uncoupledy from thedriving-wheel and the other swinging vdrurn will be coupled with thedriving-w ieel by the cam action oi the vother shifting sleeve.

The shifting of the rock-shaft is effected by a hand-lever R, connectedwith one end thereof, and the same is locked in differentadjustedpositions by means of a catch 1^,

Vmounted on the hand-lever and adapted toengage with a tooth-segment s.

Vhenever one of the swinging drums is #coupled with. the driving-wheelthe respective end of the swinging cable or line vis wound upon thesame, while the other end of y this cable is unwound from the otherswinging drum, which turns in the opposite direction, thereby turningthe bull-wheel,l around which the central part of the` swinging cablepasses, and also swinging the derrick, the mast of which carries thebull-wheel.

The parts thus tary described are well known and are shown merely toillustrate the application of my invention.

The means for causing the turning or swinging drums to turn in unison,so that the turning-cable unwinds Jfrom one drum in the same measure asit winds up on the other, is preferably constructed'as follows: trepresents a toothed or gear rim arranged on the periphery of thewheel'K of each swinging drum,so that the same also forms a gearwheel. Urepresents an intermediate or con-y trolling gear -pinion .arrangedyacross the iront of both gear-wheels K andhaving itsl pivot a arrangedat right anglesorradially relatively -to the aXis of the driving-shaftand swinging drums. This pivot is supported von the center oi ahorizontal cross-piece'c, which is arranged in front of the pinionandearwheels and connects the iront ends o the side pieces of the mainframe. The intermediate vgear-pinion meshes on opposite sidesof itscenter with the gear-wheels of both swinging drums, whereby thesegear-wheels and drums are compelled-to turn in opposite directions.

1t followsfrom this construction that Y when one end of the -turningorswinging cable is wound up by kthe forward turning movement ci oneswingingdrum the other en'd ofthe swinging cable be unwoundlat the samerate by'the backward movement of A the Aother swinging drum. By thismeans both oi cthe shitting vsleeves willib'e :in an inop- 1 theswinging Amovement Aof the der-rick =is obtained, which isnot the casewhen the paying-out swinging drum is uncontrolled.

The intermediate gear-pinion shown in the drawings consists of a diskhaving a radial row of pins arranged on one side for engagement withteeth of the ear-wheels K; but it is obvious that other orms of gearingfor transmitting the movement from one swinging drum to the other arewithin the scope of my invention.

I claim as my invention- 1. A hoisting-machine having two drums aroundwhich opposite ends of a derrickturning line are adapted to be wound anda gearing interposed between said drums and operating to turn one drumforwardly while the other drum turns backwardly, substantiall y as setforth.

2. A hoisting-machine having two axiallyalined drums around whichopposite ends of a derrick-turning line are adapted to be wound7 and agearing interposed between said drums and operati ng to turn said drumsn opposite directions, substantially as set ort 3. A hoisting-machinehaving two axiallyalined drums around which opposite ends of aderrick-turning line are adapted to be wound, gear-wheels arranged onsaid drums, and an intermediate gear-pinion meshing on opposite sideswith said gear-wheels, substantially as set forth.

4. A hoisting-machine having two axiallyalined drums around whichopposite ends of a derrick-turning line are adapted to be wound7gear-wheels arranged on the inner ends of said drums, and anintermediate 6. A hoisting-machine having a drivingshaft, two drumswhich are mounted on said shaft and around which opposite ends of aderrick-turning line are adapted to be wound, a driving-wheel arrangedbetween said drums and secured to saidshaft, means for coupling anduncoupling said drums and driving-shaft, gear-wheels arranged on theinner ends of said drums, an intermediate gear-pinion arranged at rightangles to the axis of said shaft, drums and gear-wheels and having itsteeth meshing on opposite sides of its center with the front side ofsaid ear-wheels, and a cross-piece arranged in ont of said pinion andsupporting the pivot thereof7 substantially as set forth.

Witness my hand this 8th day of May, 1906.

GEORGE L. TREDO.

